"Virtual" ppp (dial-up) interface on windows ?

Hello,
we have a custom-made program that uses a dial-up connection to transfer files from a remote server using a "custom" protocol (should be appletalk, based on IANNA).
Anyway, as long as we were using dial-up it suited us fine, now we updated to static adsl & we'd like to use it for that program too.
The problem is that the company that wrote that program doesn't want to upgrade it nor give us any specs on the protocol used (in order to write a small program to do the same task...), so we're left out cold.
Is there any way to setup a "virtual" dial-up connection that simply forwards packets to ethernet ?
 
Cfos (commercial) and RAS-pppoe (freeware) both use a virtual dialup port (COM4 or whatever available...) to connect your computer to the net via pppoe protocol. Also both of them bypass the inherent problems of the Windows pppoe driver with a lot of current firewalls.
Under Linux, the Roaring Penguin pppoe (RP-pppoe) driver should also suffice, but you have to "translate" your dialup script. If for some reason you cannot make it with RP-pppoe or a kppp script, you can use a third party program using the ppp daemon. I know that many people in your/mine country (Greece) have used a custom script with the Xisp software and succeeded to connect via an ethernet ADSL modem. If you need more help, contact the Xisp developer, mr. D. Bouras.
For Windows, Cfos is a gem of a driver, I strongly recommend it. Surely enough it does not work with all DSL modems, but being designed for the german market it works prefectly with the mainstream DSL modems (Siemens and Deutsche Telecom) ones that OTE normally provides.
 
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Thanx for answering. I wasn't really specific about our network setup. We have a firewall/router box running debian & iptables & using nat sharing the adsl connection to our windoze workstations. I want to use this "virtual" interface on a windoze workstation witht this damn :)D) program.
I've tried ras-pppoe ~2 months ago, but due to not having enough spare time, I didn't explore its functions extensively.
Anyway, I'll give it a shot some time these days & let u know about the results.
 
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